The NP-2T16S network processor module (NPM) is designed for high-density serial applications with the Cisco 4500 and 4700 routers. Already offering the industry's broadest media support for midrange/regional routers, the Cisco 4000 series with a new NP-2T16S NPM adds leading price/port for low-speed sync with the flexibility to integrate async as well. The higher density, lower price per port, and the ability to integrate the async of the NP-2T16S NPM allow the Cisco 4500 and 4700 routers to address three major applications: WAN aggregation, IBM/legacy support and integration, and regional office async integration. The NP-2T16S NPM significantly extends the ability to upgrade or replace inflexible IBM/legacy networking by providing up to 36 ports for low-speed serial concentration.In many cases, limiting the number of systems used to support the networking needs of a regional office brings lower life-cycle costs and simplified management. When a limited number of async ports, between four and eight for example, are required to support modems, async terminals, or specialized equipment (security alarms, automation equipment, and so forth), the NP-2T16S NPM can be the most cost-effective solution because it is also supporting low- and high-speed serial connectivity.